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Optical Character Recognition
OCR is the AI technique used to understand the characters in a photograph. It also helps a pdf reader understand the words on a scanned image. Post offices use it to sort letters and packages.
Today’s OCR systems can understand bad handwriting that even humans find hard to decode. Remember your doctor’s prescriptions – an AI application might be better than the pharmacist in finding the right medicine for you! But it will not know if they made a mistake…